Closures with corrosion halting means

ABSTRACT

This disclosure relates to closures including means for halting corrosion, and more particularly to a closure which includes an end panel having a recessed radius which is disposed radially outboard of an inner surface of a container mouth with sealing compound between the radius and a lip of the container whereby the radius which is conventionally positioned radially inboard of the container mouth inner surface and is thus subjected to the corrosive effects of packaged products cannot now be so effected. In further accordance with this disclosure the container lip is at least in part defined by a radius opening generally concavely axially outwardly in opposed spaced relationship to the end panel radius, and the radii are complementary contoured.

United States Patent [1 [11] 3,788,508 [451 Jan. 29, 1974 S touer Vercillo CLOSURES WITH CORROSION HALTING MEANS I Y [75] inventor: Peter A'. Verc'illo, Oak Park, 111. [73] Assignee: JContinental Can Company, Inc.,

New York, NY.

[22] Filed; Dec. 30, 1971 21 Appl. No.: 213,912 52 U.s.c|...... 2l5/40,2l5/43R 51 1m. (:1 B65d 23/00 [58] Field of Search. 215/40, 43 R [56] v I References-Cited I I UNITED STATES PATENTS 3,448,881 6/1969 Zipper 2l5/43R" 3,253,727 .5/1966 Harth; ..215/4O 3,520,436 '7/1970 Vercillo 215/40 3,071,275. 1/1963 Foss et al 215/40 2,979,218 4/1961 215/40 Primary Examiner-William T. Dixson, Jr.

Assistant Examiner-Stephen Marcus Attorney, Agent, or Firm-Diller et al.

(57 ABSTRACT This disclosure relates to closures including means for halting corrosion, and .more particularly to a closure which includes an end panel having a recessed radius j defined by a radius opening generally concavely axially outwardly in opposed spaced relationship to the end panel radius, and. the radii are complementary contoured. 1

2 Claims, 2 Drawing Figures CLOSURES WITH CORROSION HALTING MEANS The'present invention evolved from attempts to find some means of halting corrosion of caps for jars in which are packaged pickles. It was found that such me- -.tallic' closures corroded because the sealant or reverse coating on the closure developed minute cracks during .a forming operation due totensile stresses set up in the reverse coating and the outer panel as the radius of the with stacking' f eatures, strengthening the closure, and

controllingthe amount of sealing compound applied thereto, particularly when the compound is appliedby conventional,spinning methods. In addition, the proat opposite ends thereof with convexly curved radiuses 18, .19. The radius 18 merges with an annular axially upwardly facing shoulder 21, whereas the radius 19 merges with a radius 22 which in turn terminates at another axially upwardly facing shoulder 23. I The closure is constructed from precoated metallic material and includes an end panel 25 and a peripheral skirt 29 terminatingat a lower edge in a plurality of lugs 30, or similar locking means which secure the closure in the manner illustrated in FIG. 2 by interlocking with the lugs 13 in a conventional manner.

The endpanel 25 includes a recessed central panel "portion 26 merging with a further recessed annular panel portion 27. which is inclined radially outwardly and downwardly, as viewed in FIG. 2. The annular panel portion 27 in turn merges with an abrupt radius 28 defined between pointsA and B which define an angle of approximately The'radius 28 is spaced above and is complementary contoured to the radius 17 of the lip 16 and is respectivelyradially inboard and outboard of the respective surfaces l5, l4. Sealing compound S is applied atopthe precoating (not shown) of the end panel 25 between the peripheral skirt 29 and file of the panel and. the process. heretofore noted makes iteasierltoapplythe compound and utilize the .highly desirable ffeather edge principle. J ln keeping with the present invention undesired co'rro'sion has be'eneliminated by in effect moving the lower highly stressed or radius area. from inside the container whereit canbe attackedby the packaged product radiallyoutwardlto the top seal or lip area with the radius and. the lipqbeing complementary-contoured. In this fashion even should. cracking occur in the radius area, it is not exposedto the packaged contents. More- .jo'ver,',.in most cases such packages .are vacuum packed and the sealing compound'inboard and outboard ofthe uponan annular panel 3 1 connecting the peripheral 26. The sealing compound S inthe area of the radius 28 thereby covers any minute cracks or fissures in the precoating resulting from tension forces during the forming of the recessed portions 26 27 and 28. However, due tov the location of the radius 28 and the radius 17 generally centrally of the surfaces 14, 15 and the sealing compound S upon and outboard of theshoulders 21,. 23, atmosphere or packaged products can in container mouth at nonstre ssed; areas or areas of ,lim-

ited stress preclude the' introduction of exterior atmosphere or-interiorpackaged product to the radius area.

Finally, the presentfconstruction results in approximately onethird l'epreas'e of sealing compound, as compared to previous prior art constructions.

"I THE DRAWING:

FIG. 1 is a fragmentaryjexploded1 side: elevational view witha closureshown in axial cross section and illustrates the closure and an associated container priorto the assembly thereof.

FIG. 2 is an enlarged fragmentary sectional view of the encircled portion of FIG. 1, and illustrates the clo-' ence numeral 10,'and is adapted to be secured to a con- I tainer 11 which may bellfor example, a glass bottle or jatihaving a neck or finish 1;, prgvided ith lugs.

threads'orlequivalent.i'neans 13, for securing the closure IOthereto. The neck or finish 12 includes an inner cylindrical surface 14, an outer cylindrical surface 15 and an upper terminal lip generally designated by the reference numeral 16.which'includes a radius 17 opening generally concavely axially outwardly and blending no way reach these cracks or fissures and thus corrosion is precluded. I While a preferred form and arrangement of parts has been shown in illustrating the invention, it is to be clearly understood that various changes in detail and arrangement'of parts may be made without departing from the spirit and scope of this disclosure.

lclaim: l. A container and closure comprising a container body terminating in an axially' facing lip defining a 'mouth of thecontainer-body, a closure, means securing said closure to said container body, said closure including an end panel and a peripheral skirt, said end panel including a recessed radius, said radius opens upwardly and in adirection toward the closure axis, an annular panel connecting said radius to said peripheral skirt, said radius being disposed radially outboard of an inner surface of said containermouth, sealing compound between said radius and said container lip, said lip includes a radius opening generally concavely axially outwardly in opposed spaced relationship to said end panel radius, said last mentioned radius is further disposed radially inboard of an outer surface of said container mouth, and said radii are complementary contoured.

2. The container and closure as defined in claim 1 i wherein said sealing compound is adhered to coating material upon said radius. s s s 

1. A container and closure comprising a container body terminating in an axially facing lip defining a mouth of the container body, a closure, means securing said closure to said container body, said closure including an end panel and a peripheral skirt, said end panel including a recessed radius, said radius opens upwardly and in a direction toward the closure axis, an annular panel connecting said radius to said peripheral skirt, said radius being disposed radially outboard of an inner surface of said container mouth, sealing compound between said radius and said container lip, said lip includes a radius opening generally concavely axially outwardly in opposed spaced relationship to said end panel radius, said last mentioned radius is further disposed radially inboard of an outer surface of said container mouth, and said radii are complementary contoured.
 2. The container and closure as defined in claim 1 wherein said sealing compound is adhered to coating material upon said radius. 